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多选题
In which two cases would you use an outer join? （）
A
The tables being joined have NOT NULL columns.
B
The tables being joined have only matched data.
C
The columns being joined have NULL values.
D
The tables being joined have only unmatched data.
E
The tables being joined have both matched and unmatched data.
F
Only when the tables have a primary key-foreign key relationship.
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更多 “多选题In which two cases would you use an outer join? （）AThe tables being joined have NOT NULL columns.BThe tables being joined have only matched data.CThe columns being joined have NULL values.DThe tables being joined have only unmatched data.EThe tables being joined have both matched and unmatched data.FOnly when the tables have a primary key-foreign key relationship.” 相关考题
考题
In which case would you use a FULL OUTER JOIN? ()
A. Both tables have NULL values.B. You want all unmatched data from one table.C. You want all matched data from both tables.D. You want all unmatched data from both tables.E. One of the tables has more data than the other.F. You want all matched and unmatched data from only one table.
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ExhibitExamine the data in the EMPLOYEES and DEPARTMENTS tables.You want to retrieve all employees‘ last names, along with their manager‘s last names and their department names. Which query would you use?（）A. SELECT last_name, manager_id, department_name FROM employees e FULL OUTER JOIN department d ON (e.department_id = d.department_id);B. SELECT e.last_name, m.last_name, department_name FROM employees e LEFT OUTER JOIN employees m on ( e.managaer_id = m.employee_id) LEFT OUTER JOIN department d ON (e.department_id = d.department_id);C. SELECT e.last_name, m.last_name, department_name FROM employees e RIGT OUTER JOIN employees m on ( e.manager_id = m.employee_id) FULL OUTER JOIN department d ON (e.department_id = d.department_id);D. SELECT e.last_name, m.last_name, department_name FROM employees e LEFT OUTER JOIN employees m on ( e.manager_id = m.employee_id) RIGT OUTER JOIN department d ON (e.department_id = d.department_id);E. SELECT e.last_name, m.last_name, department_name FROM employees e RIGHT OUTER JOIN employees m on ( e.manager_id = m.employee_id) RIGHT OUTER JOIN departments d ON (e.department_id = d.department_id)F. SELECT last_name, manager_id, department_name FROM employees e JOIN department d ON (e.department_id = d.department_id);
考题
Which two commands would you use to discard a candidate configuration?()
A. rollbackB. deleteC. delete 0D. rollback 0
考题
In which three cases would you use the USING clause?（）A、You want to create a nonequijoin.B、The tables to be joined have multiple NULL columns.C、The tables to be joined have columns of the same name and different data types.D、The tables to be joined have columns with the same name and compatible data types.E、You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
考题
In which two cases would you use an outer join? （）A、The tables being joined have NOT NULL columns.B、The tables being joined have only matched data.C、The columns being joined have NULL values.D、The tables being joined have only unmatched data.E、The tables being joined have both matched and unmatched data.F、Only when the tables have a primary key-foreign key relationship.
考题
Which three are true regarding the use of outer joins? （）A、You cannot use IN operator in a condition that involves an outerjoin.B、You use (+) on both sides of the WHERE condition to perform an outerjoin.C、You use (*) on both sides of the WHERE condition to perform an outerjoin.D、You use an outerjoin to see only the rows that do not meet the join condition.E、In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outerjoin.F、You cannot link a condition that is involved in an outerjoin to another condition by using the OR operator.
考题
You work as a database administrator for Certkiller .com. You have set the retention period for Automatic Repository （AWR） statistics to four days and collection interval to 15 minutes. You want to view the statistics collected and stored in AWR snapshot. Which two methods would you use to view the AWR statistics？（）A、use enterprise managerB、use DBMS_SQL packageC、use DBMS_AWR packageD、use PRVT_WORKLOAD packageE、query the AWR snapshot repository objectsF、use DBMS_WORKLOAD_REPOSITORY package
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You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）A、 ONLINEB、 REVERSEC、 PARALLELD、 COMPRESSE、 NOLOGGINGF、 COMPUTE STATISTICS
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Which substitution variable would you use if you want to reuse the variable without prompting the user each time?（）A、B、ACCEPTC、PROMPTD、
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多选题You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）AONLINEBREVERSECPARALLELDCOMPRESSENOLOGGINGFCOMPUTE STATISTICS
考题
多选题Which three are true regarding the use of outer joins? （）AYou cannot use IN operator in a condition that involves an outerjoin.BYou use (+) on both sides of the WHERE condition to perform an outerjoin.CYou use (*) on both sides of the WHERE condition to perform an outerjoin.DYou use an outerjoin to see only the rows that do not meet the join condition.EIn the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outerjoin.FYou cannot link a condition that is involved in an outerjoin to another condition by using the OR operator.
考题
多选题Which two built-ins would you use to remove the HOUR_ALARM timer using the timer_id parameter?（）AFIND_TIMERBCREATE_TIMERCSET_TIMERDDELETE_TIMEREGET_APPLICATION_PROPERTY
考题
多选题In which three cases would you use the USING clause?（）AYou want to create a nonequijoin.BThe tables to be joined have multiple NULL columns.CThe tables to be joined have columns of the same name and different data types.DThe tables to be joined have columns with the same name and compatible data types.EYou want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
考题
多选题You receive an alarm that your Junos device is experiencing problems regarding temperature. Which two commands would you use to investigate this problem?（）Ashow chassis hardwareBshow chassis temperature-thresholdsCshow chassis pic fpc-slot value pic-slot valueDshow chassis environment
考题
多选题Without calling JTAC, which two troubleshooting tools on a MAG Series device would you use to identify the cause of an authentication failure?（）ARemote DebuggingBSystem SnapshotCUser Access logsDPolicy Tracing
考题
多选题Which two commands would you use to discard a candidate configuration?（）ArollbackBdeleteCdelete 0Drollback 0
考题
单选题On a Cisco Catalyst 4500 Series, the fail LED is lit for one if its two power supplies. Which command would you use to check on this problem ?（）A
Show moduleB
Show errdisable detectC
Show environmentD
Show diagnostic content
考题
多选题Which two commands would you use to view OSPF routes?（）Ashow ip route ospfBshow ospf routesCshow route protocol ospfDshow route
考题
多选题You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re/x7fcreate the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re/x7fcreate the indexes？（）AONLINEBREVERSECPARALLELDCOMPRESSENOLOGGINGFCOMPUTE STATISTICS
考题
单选题Click the Exhibit button and examine the data in the EMPLOYEES and DEPARTMENTS tables.You want to retrieve all employees, whether or not they have matching departments in the departments table. Which query would you use?（）A
SELECT last_name, department_name FROM employees NATURAL JOIN departments;B
SELECT last_name, department_name FROM employees JOIN departments ;C
SELECT last_name, department_name FROM employees e JOIN departments d ON (e.department_id = d.department_id);D
SELECT last_name, department_name FROM employees e RIGHT OUTER JOIN departments d ON (e.department_id = d.department_id);E
SELECT last_name, department_name FROM employees FULL JOIN departments ON (e.department_id = d.department_id);F
SELECT last_name, department_name FROM employees e LEFT OUTER JOIN departments d ON (e.department_id = d.department_id);
考题
单选题In which case would you use a FULL OUTER JOIN? （）A
Both tables have NULL values.B
You want all unmatched data from one table.C
You want all matched data from both tables.D
You want all unmatched data from both tables.E
One of the tables has more data than the other.F
You want all matched and unmatched data from only one table.
考题
单选题You are responsible for maintaining a SQL Server 2005 database. Business analysts in the company routinely use a view named v CustomerSales to join the Customers and Sales tables in the database. They use the view to aggregate total sales by customer by month. You need to increase the performance of the view. What should you do？（）A
Update the view to use an outer join between the Customers and Sales tables.B
Create a clustered index on the v CustomerSales view.C
Create two separate views that do not contain any joinsone view named Customers for the Customers table and another one named v Sales for the Sales table.D
Create a stored procedure for the business analysts that uses the v CustomerSales view.
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